The Collaborative International Dictionary of English v.0.48:

Acquisitive \Ac*quis"i*tive\, a.
   1. Acquired. [Obs.]
      [1913 Webster]

            He died not in his acquisitive, but in his native
            soil.                                 --Wotton.
      [1913 Webster]

   2. Able or disposed to make acquisitions; acquiring; as, an
      acquisitive person or disposition.
      [1913 Webster]

WordNet (r) 3.0 (2006):

acquisitive
    adj 1: eager to acquire and possess things especially material
           possessions or ideas; "an acquisitive mind"; "an
           acquisitive society in which the craving for material
           things seems never satisfied" [ant: unacquisitive]

Moby Thesaurus II by Grady Ward, 1.0:

76 Moby Thesaurus words for "acquisitive":
   a hog for, acquiring, all-devouring, ambitious for self, autistic,
   avaricious, avid, bottomless, careerist, coveting, covetous,
   demanding, desirous, devouring, egotistical, esurient, exacting,
   exigent, gluttonous, gobbling, grabby, grasping, greedy, hoggish,
   individualistic, insatiable, insatiate, itchy, limitless,
   mercenary, miserly, money-hungry, money-mad, narcissistic,
   omnivorous, overgreedy, personalistic, piggish, possessive,
   prehensile, privatistic, quenchless, rapacious, ravening, ravenous,
   remote, self-absorbed, self-admiring, self-advancing, self-besot,
   self-centered, self-considerative, self-contained, self-devoted,
   self-esteeming, self-indulgent, self-interested, self-jealous,
   self-occupied, self-pleasing, self-seeking, self-serving,
   self-sufficient, selfish, slakeless, sordid, swinish, unappeasable,
   unappeased, unquenchable, unsated, unsatisfied, unslakeable,
   unslaked, venal, voracious